html,
body {
	height: 100%;
	width: 100%;
	margin: 0;
	padding: 0;
}

header {
	width: 100%;
	z-index: 9999;
}

/*-------------------顶部菜单栏---------------------*/

.for-sticky {
	position: fixed;
	z-index: -1;
	bottom: 0;
	width: 100%;
	height: 50px;
	opacity: 0.8;
	z-index: 9999;
	top: 0;
	left: 0;
	border-bottom: 1px solid #f1f1f1;
	display: block;
	padding: 0px 15px 5px 15px;
	background: #ffffff;
	-webkit-transition: all 0.3s;
	-moz-transition: all 0.3s;
	-ms-transition: all 0.3s;
	-o-transition: all 0.3s;
	transition: all 0.3s;
}


/*-----------------Menu Button----------------*/

.menu-button {
	width: 34px;
	height: 45px;
	position: fixed;
	right: 0;
	margin-top: 13px;
	margin-right: 35px;
	z-index: 10000;
	padding: 0;
	cursor: pointer;
	background: transparent;
	border: none;
	outline: none;
}

.menu-button span {
	display: block;
	position: absolute;
	height: 1px;
	width: 100%;
	background: #2f2f2f;
	border-radius: 9px;
	opacity: 1;
	left: 0;
}

.menu-button span:nth-child(1) {
	top: 0px;
}

.menu-button span:nth-child(2) {
	top: 9px;
}

.menu-button span:nth-child(3) {
	top: 18px;
}

.menu-button:hover {
	opacity: 0.6;
}
/*-------------------------------------*/
/*--------------顶部大图--------------*/

.content {
	width: 100%;
	height: 100%;
	margin: 0;
	padding: 0;
}

.imgback {
	width: 100%;
	height: 100%;
	background-image: url(../images/pic_19.jpg);
	background-size: cover;
}

.intro_timeline {
	position: absolute;
	text-align: center;
	min-width: 320px;
	min-height: 250px;
	left: 50%;
	top: 50%;
	padding: 65px;
	background: rgba(255, 255, 255, 0.8);
	outline: 4px double #FFFFFF;
	outline-offset: 10px;
	-moz-outline-radius:20px ;
	border-radius: 20px;
	-webkit-transform: translateX(-50%) translateY(-50%);
	transform: translateX(-50%) translateY(-50%);
}

.go_down {
	background: transparent;
	color: #FFFFFF;
	font-family: arial;
	font-weight: bold;
	border-style: solid;
	border-color: #FFFFFF;
	border-radius: 10%;
	outline: none;
	width: 140px;
	height: 50px;
	position: absolute;
	opacity: 0.8;
	display: block;
	text-align: center;
	margin: 0 auto;
	left: 45%;
	bottom: 30px;
	z-index: 100;
	transition: background 1s;
	-webkit-transition: background 1s;
}

.go_down:hover {
	background: #353535;
}

.words_to_continue {
	position: relative;
	text-align: center;
}

/*----------------Introduce板块的CSS===============*/
.introduce {
	margin: 50px 50px 50px 50px;
	padding-top: 50px;
	position: relative;
}

ul.introduce_ul {
	list-style: none;
	position: relative;
	width: 100%;
	padding: 0;
	margin: 0;
}

ul.introduce_ul li {
	float: left;
	list-style: none;
	position: relative;
	display: inline-block;
	overflow: hidden;
	padding-top: 46%;
	width: 50%;
}

ul.introduce_ul li img {
	position: absolute;
	width: 100%;
	height: 100%;
	left: 0;
	top: 0;
}

.introduction_detail {
  font-weight: 400;
  margin-top: 70px;
  line-height: 30px;
  font-size: 14px;
  letter-spacing: 0.4px;
}

/*设置图像由灰变彩的CSS*/

li img {
	-webkit-filter: grayscale(100%);
	/* Chrome, Safari, Opera */
	filter: grayscale(100%);
	transition: filter 1s, transform 0.5s;
	-webkit-transition: filter 1s, transform 0.5s;
}

li:hover img {
	-webkit-filter: grayscale(0%);
	/* Chrome, Safari, Opera */
	filter: grayscale(0%);
	-webkit-transform: scale(1.15);
	transform: scale(1.15);
}
/*---------------------------------------*/
.img_ul_homepage{
	margin-bottom: 100px;
}
